CFD modelling of natural gas combustion in IC engines under different EGR dilution and H2-doping conditions
The present paper provides a contribution to the CFD modelling of reacting flows in IC engines fueled with natural gas. Despite the fact that natural gas has been widely investigated into in the last decades, the literature still lacks reliable models and correlations to be exploited so as to effici...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2020-12-01
|
| Series: | Transportation Engineering |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2666691X20300191 |
| _version_ | 1818736440747491328 |
|---|---|
| author | Mirko Baratta Silvestru Chiriches Prashant Goel Daniela Misul |
| author_facet | Mirko Baratta Silvestru Chiriches Prashant Goel Daniela Misul |
| author_sort | Mirko Baratta |
| collection | DOAJ |
| description | The present paper provides a contribution to the CFD modelling of reacting flows in IC engines fueled with natural gas. Despite the fact that natural gas has been widely investigated into in the last decades, the literature still lacks reliable models and correlations to be exploited so as to efficiently support the design of internal combustion engines. The paper deals with the development of an accurate CFD model, capable of capturing the effects of the engine working conditions and mixture compositions on the combustion process. The CFD model is based on the Extended Coherent Flame Model combustion model coupled to a laminar flame speed one through a user subroutine, which replaces the commonly adopted empirical correlations. The flame speed values have been derived from the application of a reaction mechanism for natural gas-air-residual gases mixtures.In the second part of the paper, the model is validated and applied to the investigation of the dependence of the combustion quality on the fuel doping with hydrogen as well as on the mixture dilution with EGR. As a matter of fact, the attractiveness of the mixture dilution with EGR relies on the potential in containing engine-out NOx emissions as well as in reducing the pumping losses, thus further abating fuel consumption at part loads. Finally, the effects of fuel blending with H2 on the EGR tolerance is discussed in the paper. |
| first_indexed | 2024-12-18T00:37:11Z |
| format | Article |
| id | doaj.art-422855f6356d413fbeff493be08b8d5a |
| institution | Directory Open Access Journal |
| issn | 2666-691X |
| language | English |
| last_indexed | 2024-12-18T00:37:11Z |
| publishDate | 2020-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Transportation Engineering |
| spelling | doaj.art-422855f6356d413fbeff493be08b8d5a2022-12-21T21:26:59ZengElsevierTransportation Engineering2666-691X2020-12-012100018CFD modelling of natural gas combustion in IC engines under different EGR dilution and H2-doping conditionsMirko Baratta0Silvestru Chiriches1Prashant Goel2Daniela Misul3Corresponding author.; Energy Department, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, ItalyEnergy Department, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, ItalyEnergy Department, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, ItalyEnergy Department, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, ItalyThe present paper provides a contribution to the CFD modelling of reacting flows in IC engines fueled with natural gas. Despite the fact that natural gas has been widely investigated into in the last decades, the literature still lacks reliable models and correlations to be exploited so as to efficiently support the design of internal combustion engines. The paper deals with the development of an accurate CFD model, capable of capturing the effects of the engine working conditions and mixture compositions on the combustion process. The CFD model is based on the Extended Coherent Flame Model combustion model coupled to a laminar flame speed one through a user subroutine, which replaces the commonly adopted empirical correlations. The flame speed values have been derived from the application of a reaction mechanism for natural gas-air-residual gases mixtures.In the second part of the paper, the model is validated and applied to the investigation of the dependence of the combustion quality on the fuel doping with hydrogen as well as on the mixture dilution with EGR. As a matter of fact, the attractiveness of the mixture dilution with EGR relies on the potential in containing engine-out NOx emissions as well as in reducing the pumping losses, thus further abating fuel consumption at part loads. Finally, the effects of fuel blending with H2 on the EGR tolerance is discussed in the paper.http://www.sciencedirect.com/science/article/pii/S2666691X20300191CFDNatural gasIC enginesCombustion modeling |
| spellingShingle | Mirko Baratta Silvestru Chiriches Prashant Goel Daniela Misul CFD modelling of natural gas combustion in IC engines under different EGR dilution and H2-doping conditions Transportation Engineering CFD Natural gas IC engines Combustion modeling |
| title | CFD modelling of natural gas combustion in IC engines under different EGR dilution and H2-doping conditions |
| title_full | CFD modelling of natural gas combustion in IC engines under different EGR dilution and H2-doping conditions |
| title_fullStr | CFD modelling of natural gas combustion in IC engines under different EGR dilution and H2-doping conditions |
| title_full_unstemmed | CFD modelling of natural gas combustion in IC engines under different EGR dilution and H2-doping conditions |
| title_short | CFD modelling of natural gas combustion in IC engines under different EGR dilution and H2-doping conditions |
| title_sort | cfd modelling of natural gas combustion in ic engines under different egr dilution and h2 doping conditions |
| topic | CFD Natural gas IC engines Combustion modeling |
| url | http://www.sciencedirect.com/science/article/pii/S2666691X20300191 |
| work_keys_str_mv | AT mirkobaratta cfdmodellingofnaturalgascombustioninicenginesunderdifferentegrdilutionandh2dopingconditions AT silvestruchiriches cfdmodellingofnaturalgascombustioninicenginesunderdifferentegrdilutionandh2dopingconditions AT prashantgoel cfdmodellingofnaturalgascombustioninicenginesunderdifferentegrdilutionandh2dopingconditions AT danielamisul cfdmodellingofnaturalgascombustioninicenginesunderdifferentegrdilutionandh2dopingconditions |